Effective Mass Suppression in Dilute, Spin-Polarized Two-Dimensional Electron Systems

Medini Padmanabhan, T. Gokmen, N. C. Bishop, and M. Shayegan
Phys. Rev. Lett. 101, 026402 – Published 7 July 2008

Abstract

We report effective mass (m*) measurements, via analyzing the temperature dependence of the Shubnikov–de Haas oscillations, for dilute, interacting, two-dimensional electron systems (2DESs) occupying a single conduction-band valley in AlAs quantum wells. When the 2DES is partially spin-polarized, m* is larger than its band value, consistent with previous results on various 2DESs. However, as we fully spin-polarize the 2DES by subjecting it to strong parallel magnetic fields, m* is unexpectedly suppressed and falls even below the band mass.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 19 September 2007

DOI:https://doi.org/10.1103/PhysRevLett.101.026402

©2008 American Physical Society

Authors & Affiliations

Medini Padmanabhan, T. Gokmen, N. C. Bishop, and M. Shayegan

  • Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 101, Iss. 2 — 11 July 2008

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×